Laundry detergents and cleaning compositions comprising sulfonate group-containing polymers

A detergent or cleaning composition comprising a sulfonate group-containing copolymer that comprises:

• a structural unit (a) derived from a sulfonate group-containing monomer (A);
• a structural unit (b) derived from a polyoxyalkylene monomer (B) represented by the following formula (1):
• wherein R1 represents a hydrogen atom or a methyl group;
• R2 represents a direct bond, CH2, or CH2CH2;
• and X0 represents a structural unit represented by the following formula (2):
• —Zn—OR0 (2)
• wherein Z may be the same or different and each represents a structural unit derived from a C2-C20 alkylene oxide;
• R0 represents hydrogen atom or a C1-C30 organic group;
• and n is an integer of from 1 to 200;
• and
• a structural unit (c) derived from a carboxyl group-containing monomer (C), wherein the sulfonate group-containing copolymer comprises from 20% to 90% by mass in an acid form equivalent of the structural unit (c) in 100% by mass of all monomer structural units constituting the sulfonate group-containing copolymer, and wherein said sulfonate group-containing copolymer is characterized by a parameter of P×Mw×n that ranges from 950,000 to 8,000,000, wherein:
• P is defined as the ratio by mass of the structural unit (b) to the structural unit (a) in the sulfonate group-containing copolymer,
• Mw is the weight average molecular weight of the sulfonate group-containing copolymer, and
• n is the interger in said formula (2),
• wherein the composition further comprises an anionic surfactant selected from the group consisting of alkyl benzene sulfonate, alkoxylated alkyl sulfates, alkyl sulfates, and mixtures thereof.